module top_module (
    input [15:0] scancode,
    output reg left,
    output reg down,
    output reg right,
    output reg up  ); 

    always @(*) begin
        case(scancode)
            16'he06b:	{left, down, right, up} = 4'b1000;
            16'he072:	{left, down, right, up} = 4'b0100;
            16'he074:	{left, down, right, up} = 4'b0010;
            16'he075:	{left, down, right, up} = 4'b0001;
            default:	{left, down, right, up} = 4'b0000;
        endcase
    end
    
endmodule
